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WASTE WATER GRADE 2 LATEST 2025 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
The filter media used at the Eau Claire treatment facility is _____
1. Cartridge
2. Reverse osmosis
3. Sand
4. Diatomaceous earth - ANSWER-sand
List the five chemicals added at the Eau Claire treatment facility
and describe each chemical's purpose - ANSWER-1.
permanganate - is used to oxide the manganese particle to create
a floc. The floc allows for the manganese to become bigger and
thus be removed from the water.
2. fluoride is added to water as it leaves the plant to improve
dental health.
3. chlorine is used as a disinfectant.
4. ammonia is used after chlorine to form chloramine which is
more stable and the disinfection reaches further in the distribution
system.
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5. lime is added as the water comes into the plant to raise the pH
of the water. Makes the less corrosive and deposited materials on
pipes to seal of lead or copper so it does not leach off into water.
What event prompted the Clean Water Act?
1. Hazardous waste exposure in Love Canal, NY
2. Cuyahoga River caught on fire
3. Times Beach, Missouri environmental contamination with dioxin
4. Enacting the Safe Drinking Water Act - ANSWER-Cuyahoga
River caught on fire
Why does Cascades Tissue need to add nutrients in the
wastewater treatment process? - ANSWER-Cascade Tissue
needs to add nutrients to their wastewater treatment process to
help digestive microbes grow during paper pulp treatment
because paper does not contain nutrients as wastewater does.
What is the purpose of the filter press at Cascades Tissue? -
ANSWER-The purpose of the filter press at Cascades Tissue is to
separate wastewaters and solids using pressure.
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Tertiary treatment at Cascades Tissue includes
1. Disinfection with chlorine
2. Disinfection with UV
3. Disinfection with ozone
4. Removal of phosphorus and nitrogen - ANSWER-Removal of
phosphorus and nitrogen
Describe how NPDES technology-based effluent limitations work?
- ANSWER-NPDES technology-based effluent limitations work by
establishing a minimum level for effluent quality. Effluent limits are
based on the toxicity of chemicals and heavy metals created.
Technology-based looks at what equipment the industry has
available at the time.
Similar to treatment technologies at a drinking water treatment
facility.
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Review how much heavy metal remains after the treatment
process. The combination treatment may remove 90% of heavy
metal. Consistent concentration of material in effluent.
Describe how NPDES water quality-based effluent limitations
work? - ANSWER-NPDES water quality-based effluent limitations
work by assessing the quality of the receiving water where the
waste will be discharged. Waste will be discharged either directly
to surface water or to the municipal sewer systems.
Samples are taken to assess how much heavy metals exist in the
receiving water already. The printing discharge is then treated to
where effluent wouldn't disturb the natural levels of heavy metals
and other substances.
What agencies enforce the CWA in Wisconsin and Minnesota? -
ANSWER-Wisconsin: Department of Natural Resources
Minnesota: Minnesota Pollution Control Agency
Why does Cascades Tissue wastewater need to be treated? -
ANSWER-Cascades Tissues wastewater needs to be treated
WASTE WATER GRADE 2 LATEST 2025 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
The filter media used at the Eau Claire treatment facility is _____
1. Cartridge
2. Reverse osmosis
3. Sand
4. Diatomaceous earth - ANSWER-sand
List the five chemicals added at the Eau Claire treatment facility
and describe each chemical's purpose - ANSWER-1.
permanganate - is used to oxide the manganese particle to create
a floc. The floc allows for the manganese to become bigger and
thus be removed from the water.
2. fluoride is added to water as it leaves the plant to improve
dental health.
3. chlorine is used as a disinfectant.
4. ammonia is used after chlorine to form chloramine which is
more stable and the disinfection reaches further in the distribution
system.
,2|Page
5. lime is added as the water comes into the plant to raise the pH
of the water. Makes the less corrosive and deposited materials on
pipes to seal of lead or copper so it does not leach off into water.
What event prompted the Clean Water Act?
1. Hazardous waste exposure in Love Canal, NY
2. Cuyahoga River caught on fire
3. Times Beach, Missouri environmental contamination with dioxin
4. Enacting the Safe Drinking Water Act - ANSWER-Cuyahoga
River caught on fire
Why does Cascades Tissue need to add nutrients in the
wastewater treatment process? - ANSWER-Cascade Tissue
needs to add nutrients to their wastewater treatment process to
help digestive microbes grow during paper pulp treatment
because paper does not contain nutrients as wastewater does.
What is the purpose of the filter press at Cascades Tissue? -
ANSWER-The purpose of the filter press at Cascades Tissue is to
separate wastewaters and solids using pressure.
,3|Page
Tertiary treatment at Cascades Tissue includes
1. Disinfection with chlorine
2. Disinfection with UV
3. Disinfection with ozone
4. Removal of phosphorus and nitrogen - ANSWER-Removal of
phosphorus and nitrogen
Describe how NPDES technology-based effluent limitations work?
- ANSWER-NPDES technology-based effluent limitations work by
establishing a minimum level for effluent quality. Effluent limits are
based on the toxicity of chemicals and heavy metals created.
Technology-based looks at what equipment the industry has
available at the time.
Similar to treatment technologies at a drinking water treatment
facility.
, 4|Page
Review how much heavy metal remains after the treatment
process. The combination treatment may remove 90% of heavy
metal. Consistent concentration of material in effluent.
Describe how NPDES water quality-based effluent limitations
work? - ANSWER-NPDES water quality-based effluent limitations
work by assessing the quality of the receiving water where the
waste will be discharged. Waste will be discharged either directly
to surface water or to the municipal sewer systems.
Samples are taken to assess how much heavy metals exist in the
receiving water already. The printing discharge is then treated to
where effluent wouldn't disturb the natural levels of heavy metals
and other substances.
What agencies enforce the CWA in Wisconsin and Minnesota? -
ANSWER-Wisconsin: Department of Natural Resources
Minnesota: Minnesota Pollution Control Agency
Why does Cascades Tissue wastewater need to be treated? -
ANSWER-Cascades Tissues wastewater needs to be treated
